input: misc: add support for scaling X and Y touch co-ordinates

In certain situations, due to resolution mismatch, we may need to
scale up/down the X and Y co-ordinates returned by the touch controller.
Add support for the same where we scale up/down the X and Y touch
co-ordinates returned from the touch controller before sending it to
android. In such cases, we also need to ensure that the display resolution
matches the touch resolution. Add support for that as well.

Change-Id: Ia2dabf480478e26db1e1f0d92ca9ba5a252f18eb
Signed-off-by: Shantanu Jain <shjain@codeaurora.org>